Fitness device



FIG. 1 is a front perspective view of a fitness device according to embodiments of the present invention;

FIG. 2 is a rear perspective view of the fitness device;

FIG. 3 is a front view of the fitness device;

FIG. 4 is a rear view of the fitness device;

FIG. 5 is a bottom view of the fitness device;

FIG. 6 is a top view of the fitness device;

FIG. 7 is a left side view of the fitness device; and,

FIG. 8 is a right side view of the fitness device.

Portions of FIGS. 1 through 8 are shown in dashed lines for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a fitness device, as shown and described. 